Those of you out there with smooth coated BC's is it typical for them to have an awful lot of undercoat? I've had three rough coated dogs with differences in coats types (long/straight with little undercoat, fluffy with little undercoat and straight with cowlicks and little undercoat.) My smooth coated BC suddenly (at the age of five) grew a lot of undercoat. And it's tanish (she's a black tri.) The heat is bothering her this summer and I understand why with that undercoat. I don't know if it is normal. She is on Proin due to urinary issues and since she started that in December I'd like to blame the Proin but I've never seen that listed as a side effect. Any thoughts?